[Towards a deterioration of the structural and perceptive representations of objects in physiological aging?]

(Vieillissement normal : vers une dégradation des représentations structurales, auditives et visuelles, des objets?)

Full Abstract

Previous data collected in healthy elderly participants by our laboratory suggested impairment of visual and auditory object processing in normal aging. This impairment seemed not to be related to simple perceptual deficits. The aim of the present study was to identify the mechanism of this disorder according to serial models of object recognition, by dissociating the recognition abilities using naming tasks from a visual and from auditory stimuli, perceptual representations (visual and auditory), and semantic knowledge on the same 62 objects. Fifty three healthy participants were divided in three groups according to age (20-30 years, n = 17; 40-50 years, n = 14; 60-95 years, n = 22). They performed a battery assessing visual and auditory naming, judgement on semantic knowledge and perceptual visual properties, and matching of perceptual auditory properties of the same objects. The aged participants had lower performance on the naming tasks in both modalities, and worse perceptual properties performances again for both modalities than the other two groups. However, no significantly statistical difference was found on the semantic task. A significant correlation was found between age and the scores on each of the four tasks on which aged participants had lower scores than the youngest ones. No statistical difference was found between the two younger groups, but a trend was shown for the perceptual properties. Thus a degradation of perceptual representations of objects seems to be present in normal aging, but the nature of this degradation has to be specified.

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Author information

Author/s: Ehrlé, Nathalie (N); Goudour, Amandine (A); Legrand, Aurélie (A); Bakchine, Serge (S);

Affiliation: Hôpital Maison-Blanche, Service de Neurologie, Centre Hospitalier Régional Universitaire de Reims, France.

Journal and publication information

Publication Type: English Abstract; Journal Article

Journal: Psychologie & neuropsychiatrie du vieillissement (Psychol Neuropsychiatr Vieil), published in France. (Language: fre)

Reference: 2008-Jun; vol 6 (issue 2) : pp 145-56

Dates: Created 2008/06/16; Completed 2008/09/03;

PMID: 18556273, status: MEDLINE (last retrieval date: 11/6/2008)

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MeSH headings (categories)

This article was linked to the MESH Headings shown below.

Adult
Aged
Aged, 80 and over
Aging - psychology
Auditory Perception - physiology
Female
Form Perception - physiology

Form Perception - physiology
Humans
Male
Middle Aged
Neuropsychological Tests
Recognition (Psychology) - physiology
Visual Perception - physiology

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